All COIN SNAPS are 2 x 2" and about 1/4" thick. These clear, snap-together plastic cases come with a black foam insert to hold the coin in place. Snaps also protect the coins from tarnishing elements such as humidity and drastic temperature changes. All snaps I use are interchangeable with the displays I also sell.
***All puzzles include one of these, please only order an extra if you plan to open and close your puzzle often.